Possibilities:
- Tracks are broken.
- Tank's engine was disabled
- Transmission mechanical issue
- Ran out of gas and isolated.
- No reinforcements, isolated, unable to retreat quickly enough
- Electronics failure
You cannot tell from 50M above the tank what the internal issue is, so absence of evidence is not evidence of absence. Occam's razor suggest immobilization and abandonment , not "fraticide".
The fact that "fraticide" even comes up reveals a lot about your biases.
Somehow managed to get in the middle of a forest without suffering this?
All these other possibilities suggest a worst state for the Ukrainian forces --- lack of maintenance, furnished with unreliable tanks, insufficient fuel for tanks.
I honestly do not think you would be dumb enough to deploy into a forest position without reserve fuel to retreat. You run out of fuel exactly as you deployed? This only makes sense if the tank is in the middle of the road. Bad engines and bad transmissions happen if the tank is moving, like in a trail or a road. No trail or road here.
It's also possible the tank was grenaded by an SoF infiltrator from the RuAF. There are stories that Ukrainians fail to identify infiltrators behind their lines, only to have these infiltrators turn around and shoot them.
In other news from @milchronicles. Sounds like an enormous fire bag has been set up.
Since the beginning of December, the losses of the Armed Forces of Ukraine on the eastern and southern outskirts of Bakhmut (Artemovsk) have increased dramatically. According to the Military Chronicle, this direction is defended by the forces of the 30th and 53rd brigades of the Ukrainian army.
To maintain control over the city, the Ukrainian Armed Forces are moving new reinforcements to this area, which suffer heavy losses, barely having time to turn around. Because of this, the hospitals of Bakhmut and neighboring cities are packed with a huge number of wounded, for whom the gyms of city schools are being prepared. This demoralizes the Ukrainian troops and increases the burden on the medical and logistics system.
The position of the PMC "Wagner" in this area is more advantageous from the point of view of tactics: Bakhmut, located in a lowland, is within the reach of all types of artillery pieces, which makes it possible to fire at almost any military installations within the city.
Reinforcements of the Armed Forces of Ukraine arrive in Bakhmut through well-known and well-explored areas, which the artillery of the “orchestra” keeps under fire control.
In addition, the attack of PMC "Wagner" on the neighboring Soledar is developing. An attack on the fortified area of the Armed Forces of Ukraine near Yakovlevka could provoke the operational encirclement of Bakhmut.
As a result, Bakhmut has become a platform, for the retention of which Kiev is forced to spend colossal human resources.